The house had been on the market for the past three weeks. Tittleton discovered it was going to auction only when he was told by the real estate agent selling the house, he said.

Tittleton, who has remained in the house since his conviction, would be moving into a rental home in Picton on July 1, whether the house sold or not, he said.

Police found 1.64 kilograms of dried cannabis head and eight cannabis plants during a raid on Tittleton's Wellington St home in 2009. Cultivation and harvesting equipment was also found under his house.

The estimated street value of the cannabis was between $32,000 and $41,000.

In 2011, Tittleton was sentenced to forfeit 50 per cent of the value of his home, in the first time the Criminal Proceeds (Recovery) Act 2009 had been used to seize a house in Marlborough.

The property was valued at $377,000 in January 2010. Two years later, it decreased to $332,000.

Tittleton, who owned the house outright and has lived there for 17 years, lost a High Court appeal in 2012 against the sentence.

Sergeant Kris Payne, of Picton, said it had been a long process, and he was glad it was finally over.

"It sends a clear message to criminals," he said.

"If you deal or grow drugs, you could lose your house."

The house is being sold by real estate company Bayleys on behalf of the Crown.